Improved bbiok-machine



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Letters .Patent No. 80,231,1dated July 21, 1868.

IMPRovED BRICK-MACHINE.

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TO ALL WHOM IT MAY CONCERN: l i

Be it known thatI, FRANGIs H. SMITH, of the city and county of Baltimore, and State ofl Maryland, have invented anew and improved Machine for Moulding Bricks; and I do hereby declare thefollowing to bea full, clear, and exact description thereof, Vreference 'being made to the accompanyin'gdrawings, makinga part thereof, and as these improvements are in fact made. upon the machine for which Letters Patent W'erevgranted me on the 3d October, 1854, No. 11,752, I'refer also tothe drawings thereof, and nowmake the same appart of this application, in order more clearly to set forth my improvements, and en-ablefothe'rs skilled in the art to make and use the same. i i I All that now remains of the former machine are the bed-plate, iig. 4, the hub and wooden step, iig. 5, the screw, fig. 6, with the main shaft thereto attached. All the rest is new. i

` Of the present inventionv i Figure 1 is an isometrical or externalvew, showing the brick-moulding machine' in working operation. Figure 2 is a'sideyie'w of the same. i Eigure Sis a horizontal section, showing all parts of the machinebelow the section-line y y marked in iigffl. Viigure 4f is a top view, showing the gearing.

Figure 5 is a profile, showing the spindle and interior of the pug-mill. Figure 6 is a detached view of one of the tri-armed cutters or blades. A represents the principal frame ofthe machine. B, the sides of the Octagon or eight-sided tub .called the pug-mill. Four of the sidesare of iron, that the three iixedfknivcs b may be castA thereon. They are so placed that the tri'earmed blades a may pass' between them, by which the large lumps of clay are broken up, and become properly-comminuted and tempered. If the sh'aft had the usual blades in sets of four, then all of-them would bear upon the fixed knives b at the same time, i but by having them` in sets of three, only one'set presses against the knives b at the same instant, requiring much less power to operate. e

The shaft C is provided with tri-armed curved blades, iig. 6, and on the lower part of saidfshaft is secured a spiral flange, H, to serve as a. pressure, and force the temperediclay through openings or gratings c ini the vbed-plate; the number of said openings corresponding with the number of moulds in one frame, according to the size or capacity of the machine, that is to say, for one mould, four moulds, or six.V Y

The mould of the former patent did not answerthe expectations formed of it, and very soon had' to be abandoned. I Y i i p l The present one, Figure 8, given in three views, a. plan, a longitudinal section, and a transverse'section, is an open portable mould, precisely like those in common use, having one, four, or six in one` frame. f The peculiarity consist-s in thevplate or mould-carrier 0, on which it rests while passingi'onthe ways Vbeneath the bed-plate Z. It is provided with four lugs or ears d,'to steady and keep it in itspropex` place.

It is important that the mould be placed precisely in its proper position beneath the openings c in the bedplate Z, for the variance,of half an inch, or even less, would be fatal; for, unless the dividings of the mould he placedpreciselyfbeneath and corresponding dividings in the bed-plate, the clay, in its passagethrou'gh,-would wipe off the sand from the 4mould with which it was dusted, and the bricknwould not slip. yNo provision was made' for this in the former invention, but is now effected in the followingmanner:

' The'mould, g. 8, and its plate O, are moved on th'e ways by the bar N, whoh'is'connected, by the links M, with the lever If. The upper end of said'leve'r is connected, by the wooden armJ, with the crank-wheelsf, i at the ends of the shaft K, which receives its motion from the shaft E, through the medium of spur-gear I.

The shaft E receives its motion from the shaft G, through the medium ofvspur-gear F. On the end of this shaft G is the driving-pulley R. v p

On top of the spindle C is the bevel-wheel D, which receives its motion from' a bevel-pinion on the shaft-,Et The fling of the levers I and consequent motion of the bar N are governed-by the distance of the crank-ping from the centre of the crank-wheel f, and any slightdiierence may be regulated by set-screws g, passing through slots,which connect the links M with thelower ends of levers I.

The arm J is made of wood, in orderthat it may break in case of obstruction, and'thus actas a safety-` guard to the machine.

An empty mould is placed in position lunder the bed-plate at each revolution, and remains at rest while being Ifilled. The bar N then recedes to receive'another mould, which pushes along the one just filled, and an empty one takes its place. Thus,'the train of moulds is kept'in motion, and, as they appear in front, are borne oif to the drying-door, and the plates passed back to receive other moulds.

In the former machine, the clay was sliced off by the broad knife Figure 9, hung on pivots, but the loss of time in keeping-this clean compelled it to be laid aside. I now do this better by bringing the mould and bedplate so close to each other, that the mould comes out completely shaven; but this must lbe regulated, even to the sixteenth of an inch. I do this by the set-screws e at the corners ofthe bed-plate.

Having thus fully described the nature of my invention, what I claim as new, and desire to secure by Letters'Patent, is-

The adjustable bed-plate Z, when vertically adjusted by means of the set-screws e, the mould-carrier 0, provided with its open mould and lugs d, and the jointed lever-arms M I, and wooden arms J, all arranged together and operated as and for the purpose herein set forth.

The above specification of my invention signed by me, this 18th day of March, 1868.

' F. H. SMITH.

Witnesses:

WM. H. BAYJAUD, E. HovnY. 

